Connected: An Internet Encyclopedia
RFC 1035 - 3.3.1. CNAME RDATA format

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### 3.3.1. CNAME RDATA format

        +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
        /                     CNAME                     /
        /                                               /
        +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+

where:

    CNAME           A <domain-name> which specifies the canonical or primary
                    name for the owner.  The owner name is an alias.

CNAME RRs cause no additional section processing, but name servers may choose to restart the query at the canonical name in certain cases. See the description of name server logic in [RFC-1034] for details.

Next: 3.3.2. HINFO RDATA format

Connected: An Internet Encyclopedia
RFC 1035 - 3.3.1. CNAME RDATA format